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<FONT color="green">001</FONT>    package edu.hawaii.myisern.action;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import javax.servlet.Filter;<a name="line.3"></a>
<FONT color="green">004</FONT>    import javax.servlet.FilterChain;<a name="line.4"></a>
<FONT color="green">005</FONT>    import javax.servlet.FilterConfig;<a name="line.5"></a>
<FONT color="green">006</FONT>    import javax.servlet.ServletException;<a name="line.6"></a>
<FONT color="green">007</FONT>    import javax.servlet.ServletRequest;<a name="line.7"></a>
<FONT color="green">008</FONT>    import javax.servlet.ServletResponse;<a name="line.8"></a>
<FONT color="green">009</FONT>    import javax.servlet.http.HttpServletRequest;<a name="line.9"></a>
<FONT color="green">010</FONT>    import javax.servlet.http.HttpServletResponse;<a name="line.10"></a>
<FONT color="green">011</FONT>    import net.sourceforge.stripes.util.Log;<a name="line.11"></a>
<FONT color="green">012</FONT>    <a name="line.12"></a>
<FONT color="green">013</FONT>    import java.io.IOException;<a name="line.13"></a>
<FONT color="green">014</FONT>    import java.util.HashSet;<a name="line.14"></a>
<FONT color="green">015</FONT>    import java.util.Set;<a name="line.15"></a>
<FONT color="green">016</FONT>    <a name="line.16"></a>
<FONT color="green">017</FONT>    /**<a name="line.17"></a>
<FONT color="green">018</FONT>     * Simple security check that ensures that the user is logged in<a name="line.18"></a>
<FONT color="green">019</FONT>     * before allowing access to any secured pages.<a name="line.19"></a>
<FONT color="green">020</FONT>     * Adapted from Bugzooky application.<a name="line.20"></a>
<FONT color="green">021</FONT>     *<a name="line.21"></a>
<FONT color="green">022</FONT>     * @author Tim Fennell<a name="line.22"></a>
<FONT color="green">023</FONT>     * @author Lisa Chen<a name="line.23"></a>
<FONT color="green">024</FONT>     */<a name="line.24"></a>
<FONT color="green">025</FONT>    public class SecurityFilter implements Filter {<a name="line.25"></a>
<FONT color="green">026</FONT>      protected static Log log = Log.getInstance(IsernActionBean.class);<a name="line.26"></a>
<FONT color="green">027</FONT>      private static Set&lt;String&gt; publicUrls = new HashSet&lt;String&gt;();<a name="line.27"></a>
<FONT color="green">028</FONT>    <a name="line.28"></a>
<FONT color="green">029</FONT>      static {<a name="line.29"></a>
<FONT color="green">030</FONT>        System.out.println("setting up security filter");<a name="line.30"></a>
<FONT color="green">031</FONT>        publicUrls.add("/login.jsp");<a name="line.31"></a>
<FONT color="green">032</FONT>        publicUrls.add("/Login.action");<a name="line.32"></a>
<FONT color="green">033</FONT>        publicUrls.add("/Reload.action");    <a name="line.33"></a>
<FONT color="green">034</FONT>        publicUrls.add("/reload.jsp");    <a name="line.34"></a>
<FONT color="green">035</FONT>      }<a name="line.35"></a>
<FONT color="green">036</FONT>      /**<a name="line.36"></a>
<FONT color="green">037</FONT>       * do nothing.<a name="line.37"></a>
<FONT color="green">038</FONT>       * @param filterConfig FilterConfig object<a name="line.38"></a>
<FONT color="green">039</FONT>       * @throws ServletException on servlet error.  <a name="line.39"></a>
<FONT color="green">040</FONT>       */<a name="line.40"></a>
<FONT color="green">041</FONT>      public void init(FilterConfig filterConfig) throws ServletException {<a name="line.41"></a>
<FONT color="green">042</FONT>        /* empty method to satify interface Filter. */<a name="line.42"></a>
<FONT color="green">043</FONT>      }<a name="line.43"></a>
<FONT color="green">044</FONT>      /**<a name="line.44"></a>
<FONT color="green">045</FONT>       * Allows authenticated users access to internal Urls.<a name="line.45"></a>
<FONT color="green">046</FONT>       * <a name="line.46"></a>
<FONT color="green">047</FONT>       * @param servletRequest HTTP Servlet Request object.<a name="line.47"></a>
<FONT color="green">048</FONT>       * @param servletResponse HTTP Servlet Response object.<a name="line.48"></a>
<FONT color="green">049</FONT>       * @param filterChain filterChain object.<a name="line.49"></a>
<FONT color="green">050</FONT>       * @throws IOException on io error.<a name="line.50"></a>
<FONT color="green">051</FONT>       * @throws ServletException on servlet error. <a name="line.51"></a>
<FONT color="green">052</FONT>       */<a name="line.52"></a>
<FONT color="green">053</FONT>      public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,<a name="line.53"></a>
<FONT color="green">054</FONT>          FilterChain filterChain) throws IOException, ServletException {<a name="line.54"></a>
<FONT color="green">055</FONT>        log.debug("doFilter was called " ) ; <a name="line.55"></a>
<FONT color="green">056</FONT>        <a name="line.56"></a>
<FONT color="green">057</FONT>        HttpServletRequest request = (HttpServletRequest) servletRequest;<a name="line.57"></a>
<FONT color="green">058</FONT>        HttpServletResponse response = (HttpServletResponse) servletResponse;<a name="line.58"></a>
<FONT color="green">059</FONT>    <a name="line.59"></a>
<FONT color="green">060</FONT>        if (request.getSession().getAttribute("user") == null &amp;&amp; !isPublicResource(request) ) {<a name="line.60"></a>
<FONT color="green">061</FONT>          log.debug("doFilter REJECTED!" ) ;<a name="line.61"></a>
<FONT color="green">062</FONT>          // Redirect the user to the login page, noting where they were coming from<a name="line.62"></a>
<FONT color="green">063</FONT>          response.sendRedirect(request.getContextPath() + "/login.jsp");<a name="line.63"></a>
<FONT color="green">064</FONT>        }<a name="line.64"></a>
<FONT color="green">065</FONT>        else { <a name="line.65"></a>
<FONT color="green">066</FONT>          log.debug("doFilter Accepted!" ) ;<a name="line.66"></a>
<FONT color="green">067</FONT>          filterChain.doFilter(request, response);<a name="line.67"></a>
<FONT color="green">068</FONT>        }<a name="line.68"></a>
<FONT color="green">069</FONT>      }<a name="line.69"></a>
<FONT color="green">070</FONT>    <a name="line.70"></a>
<FONT color="green">071</FONT>      /**<a name="line.71"></a>
<FONT color="green">072</FONT>       * Method that checks the request to see if it is for a publicly accessible resource<a name="line.72"></a>
<FONT color="green">073</FONT>       *<a name="line.73"></a>
<FONT color="green">074</FONT>       * @param request User requested HTTP Servlet Request object.<a name="line.74"></a>
<FONT color="green">075</FONT>       * @return True if the request is a publicly accessible resource.<a name="line.75"></a>
<FONT color="green">076</FONT>       */<a name="line.76"></a>
<FONT color="green">077</FONT>      protected boolean isPublicResource(HttpServletRequest request) {<a name="line.77"></a>
<FONT color="green">078</FONT>        return publicUrls.contains(request.getServletPath());<a name="line.78"></a>
<FONT color="green">079</FONT>      }<a name="line.79"></a>
<FONT color="green">080</FONT>    <a name="line.80"></a>
<FONT color="green">081</FONT>      /** Does nothing. */<a name="line.81"></a>
<FONT color="green">082</FONT>      public void destroy() {<a name="line.82"></a>
<FONT color="green">083</FONT>        /* empty method to satify interface Filter. */<a name="line.83"></a>
<FONT color="green">084</FONT>      }<a name="line.84"></a>
<FONT color="green">085</FONT>    }<a name="line.85"></a>




























































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